How To Remove Gun Blueing

How to Remove Gun Bluing: A Comprehensive Guide

Gun bluing, also known as black oxide finishing, is a popular method for protecting firearms from rust and corrosion. However, there are times when you might need to remove it. Whether you're restoring a firearm, preparing for a refinishing job, or simply curious about the process, this guide will walk you through the different methods for removing gun bluing. Caution: Always prioritize safety when working with chemicals and tools. Wear appropriate safety gear, including gloves and eye protection.

Understanding Gun Bluing Removal

Before diving into the methods, it's important to understand that removing gun bluing is a potentially damaging process. The bluing process itself alters the metal's surface, and aggressive removal techniques can cause scratches, pitting, or other imperfections. The best approach depends on the type of bluing, the metal of the firearm, and your desired level of finish.

Factors to Consider:

• Type of Bluing: Different bluing methods (hot salt bath, cold bluing, etc.) may react differently to removal methods.
• Metal Type: Steel, cast iron, and other metals will respond differently to chemicals and abrasive techniques.
• Desired Finish: Are you aiming for a completely bare metal finish, or are you planning a subsequent refinishing process?

Methods for Removing Gun Bluing

Several methods can be employed, each with its own pros and cons:

1. Mechanical Removal:

This involves using abrasive tools to physically remove the bluing.

• Sandpaper: Start with a coarse grit and gradually move to finer grits. This method is labor-intensive and requires careful control to avoid damaging the underlying metal.
• Sandblasting: A more aggressive method, sandblasting can quickly remove bluing but also carries a high risk of damaging the metal. This should only be attempted by experienced individuals with the proper equipment.
• Wire Wheel: Similar to sandpaper, a wire wheel can be used but requires caution to avoid deep scratches.

2. Chemical Removal:

This involves using chemicals to dissolve or lift the bluing from the metal surface. Always work in a well-ventilated area and follow the manufacturer's instructions carefully.

• Evaporust: A popular choice, Evaporust is a relatively safe and effective chemical for removing bluing. It works by slowly dissolving the oxide layer. Soaking time will vary depending on the thickness of the bluing.
• Other Chemical Strippers: Various commercial chemical strippers are available, but always check their compatibility with the metal of your firearm before use. These are often stronger than Evaporust and require extra caution.

3. Electrolytic Removal:

This advanced method utilizes an electrolytic process to remove the bluing. It requires specialized equipment and knowledge and is generally not recommended for beginners.

Choosing the Right Method:

The best method depends on your skills and the condition of the firearm. For minor bluing removal or a delicate firearm, mechanical removal with fine-grit sandpaper is a safer starting point. For larger areas or thicker bluing, a chemical stripper like Evaporust might be more efficient. Remember to always test any method on an inconspicuous area first to assess its effect.

After Bluing Removal:

After removing the bluing, you'll likely need to clean the metal thoroughly to remove any residue from the process. This might involve washing with soap and water, followed by a thorough rinsing. If you're planning to refinish the firearm, proper preparation of the surface is crucial for a successful outcome.

Remember that removing gun bluing is a process that demands patience and precision. Always prioritize safety and take your time to achieve the best results. If you're unsure about any aspect of the process, it's best to consult with a professional gunsmith.